A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5920-00-521-8331
NSN 5960-01-141-6489
NSN 6610-01-450-3998
NSN 5975-00-004-9431
NSN 6685-00-225-3518
NSN 5895-01-119-1601
NSN 5935-01-526-1003
NSN 2925-01-071-9291
NSN 6645-01-480-9847
NSN 6130-00-897-4240
NSN 6105-01-096-9239
NSN 6320-00-110-8005